Finding the Fourth Proportional to 11,310.86, 16,967.55 and 3,915.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,310.86 : 16,967.55 = 3,915.98 : x
2. Step 2: Convert to fraction form
   11,310.86/16,967.55 = 3,915.98/x
3. Step 3: Cross multiply
   11,310.86x = 16,967.55 × 3,915.98
4. Step 4: Simplify right side
   11,310.86x = 66,444,586.45
5. Step 5: Solve for x
   x = 66,444,586.45/11,310.86
6. Step 6: Final answer
   x = 5,874.41